Alert Notice 333: Possible New Dwarf Nova in Cet (ASAS023322)

January 21, 2006

SUBJECT: Possible New Dwarf Nova in Cet (ASAS023322)

Bogumil Pilecki, Warsaw University Astronomical Observatory, reports on a possible new nova or dwarf nova discovered by the ASAS3V instrument. Coordinates by David Boyd (BDG) using UCAC2 as reference are:

RA: 02:33:21.398 +/- 0.07 Decl.: -10:47:04.55 +/- 0.07 (J2000)

The previously unobserved object was first detected by ASAS3V on Jan 20.121 UT at magnitude 12.08 in V.

The new object has been confirmed by the following AAVSO observations:

Time series observations by Tom Krajci do not reveal any short term modulation at this time, however the data set is short. Please take CCD time series observations for as long as possible in the next few days and submit your observations to the AAVSO. If this is a UGWZ type dwarf nova then superhumps will be detected, and a change in their hase may be detected early in the outburst. Visual observations are requested to monitor the star's long term behavior. Spectroscopic observations would also help to determine the star's type.

Pilecki reports that one star is located close to this position in the USNOB catalog:

Until a more formal designation is assigned, submit data to the AAVSO as "ASAS023322" with a designation of 9999+99.

A web page [obsolete link; all info therein included in this Alert Notice] coordinating this campaign will be created and posted to www.aavso.org in the next couple of days. Discussion is requested to take place on the AAVSO Photometry discussion group.